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Gree · Heat pump

L9 Power protection

Medium severity Gree SapphireGree Livo GEN4Gree Vireo GEN3

What the control is telling you

Power draw was too high to protect the electronics: the compressor stops, the outdoor fan stops 30 s later, and both restart after 3 min.

Applies to: Gree Sapphire 9-24k (SAP..HP230V1A), Livo GEN4 30-36k (4LIV..HP230V1A), Vireo GEN3 9-24k (3VIR..HP115/230V1A)

Likely causes

  • High load or high pressure
  • Supply problem

Test and repair steps

  1. Clean the coils and check fans.
  2. Check supply voltage.
  3. If it repeats, check the charge.

Models that show this code

12 models in Gree Sapphire, Gree Livo GEN4, Gree Vireo GEN3

3VIR09HP115V1A3VIR09HP230V1A3VIR12HP115V1A3VIR12HP230V1A3VIR18HP230V1A3VIR24HP230V1A4LIV30HP230V1AH4LIV36HP230V1AHSAP09HP230V1AHSAP12HP230V1AHSAP18HP230V1AHSAP24HP230V1AH

Other codes on the same units

  • L3 Outdoor DC fan motor fault
  • P5 Compressor phase overcurrent
  • P7 Inverter module temperature sensor fault
  • P8 Inverter module overheated
  • U1 Compressor phase current sensing fault
  • U3 DC bus voltage drop
  • U5 Whole-unit current sensing fault
  • U7 Reversing (4-way) valve fault

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Source: Gree Sapphire 9-12k (SAP09-12HP230V1A) service.pdf - section 9.1 Error Code List / 9.2 Procedure of Troubleshooting; Gree Sapphire 18-24k (SAP18-24HP230V1A) service.pdf - section 9.1 Error Code List / 9.2 Procedure of Troubleshooting; Gree Livo GEN4 30-36k (4LIV30-36HP230V1A) service.pdf - section 9.1 Error Code List / 9.2 Procedure of Troubleshooting; Gree Vireo GEN3 9-24k (3VIR..HP115-230V1A) service GREE_VIREOGEN3_SERVICE_090921.pdf - section 9.1 Error Code List / 9.2 Procedure of Troubleshooting. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.